The truly greats in most sports just seem to have something "extra" that can't be earned by practice and skill alone. Their reflexes move just a little bit fast

The truly greats in most sports just seem to have something "extra" that can't be earned by practice and skill alone. Their reflexes move just a little bit faster, their muscles recover just a tad bit quicker. I really don't think the difference between an Usain Bolt and a Tyson Gay is practice. Or that no one has been able to beat Federer/Nadal/Djokovic in a decade consistently because they're not practicing hard enough. At the highest level, it's a game of milliseconds and 0.1% improvements. The truly great just somehow have that